Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913726288887808 |
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| author | Rani, Poonam Murakami, Takumi Watanabe, Yuto Sepehri-Amin, Hossein Arima, Hiroto Yamashita, Aichi Mizuguchi, Yoshikazu |
| author_facet | Rani, Poonam Murakami, Takumi Watanabe, Yuto Sepehri-Amin, Hossein Arima, Hiroto Yamashita, Aichi Mizuguchi, Yoshikazu |
| contents | Magneto-thermal switching (MTS) is a key technology for efficient thermal management. Recently, large MTS with nonvolatility has been observed in Sn-Pb solders [H. Arima et al., Commun. Mater. 5, 34 (2024)] where phase separation, different superconducting transition temperature (Tc) of Sn and Pb, and magnetic-flux trapping are the causes of the nonvolatile MTS. To further understand the mechanism and to obtain the strategy for enhancing switching ratio, exploration of new phase-separated superconductors with nonvolatile MTS is needed. Here, we show that the In52-Sn48 commercial solder is a phase-separated superconducting composite with two Tc and traps vortices after field cooling. A clear signature of nonvolatile MTS was observed at T = 2.5 K. From specific heat analyses, we conclude that the vortices are mainly trapped in the lower-Tc phase (γ-phase) after field cooling, which is the evidence that vortex trapping also works on achieving nonvolatile MTS in phase-separated superconducting composites. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_14824 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder Rani, Poonam Murakami, Takumi Watanabe, Yuto Sepehri-Amin, Hossein Arima, Hiroto Yamashita, Aichi Mizuguchi, Yoshikazu Superconductivity Materials Science Magneto-thermal switching (MTS) is a key technology for efficient thermal management. Recently, large MTS with nonvolatility has been observed in Sn-Pb solders [H. Arima et al., Commun. Mater. 5, 34 (2024)] where phase separation, different superconducting transition temperature (Tc) of Sn and Pb, and magnetic-flux trapping are the causes of the nonvolatile MTS. To further understand the mechanism and to obtain the strategy for enhancing switching ratio, exploration of new phase-separated superconductors with nonvolatile MTS is needed. Here, we show that the In52-Sn48 commercial solder is a phase-separated superconducting composite with two Tc and traps vortices after field cooling. A clear signature of nonvolatile MTS was observed at T = 2.5 K. From specific heat analyses, we conclude that the vortices are mainly trapped in the lower-Tc phase (γ-phase) after field cooling, which is the evidence that vortex trapping also works on achieving nonvolatile MTS in phase-separated superconducting composites. |
| title | Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2408.14824 |